US3461257A - Movable piston means for retaining fluid in electrical coupling device - Google Patents

Movable piston means for retaining fluid in electrical coupling device Download PDF

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Publication number
US3461257A
US3461257A US683424A US3461257DA US3461257A US 3461257 A US3461257 A US 3461257A US 683424 A US683424 A US 683424A US 3461257D A US3461257D A US 3461257DA US 3461257 A US3461257 A US 3461257A
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US
United States
Prior art keywords
contact
coupling
piston
casing
piston means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US683424A
Other languages
English (en)
Inventor
Gerhard Brockhaus
Heilgenhaus Bezirk
Gunter Leonhardt
Heinz Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Calor Emag AG
Original Assignee
Calor Emag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Calor Emag AG filed Critical Calor Emag AG
Application granted granted Critical
Publication of US3461257A publication Critical patent/US3461257A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/46—Contacts characterised by the manner in which co-operating contacts engage by sliding self-aligning contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/02—Details
    • H02B11/04—Isolating-contacts, e.g. mountings or shieldings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/005—Electrical connection between switchgear cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear

Definitions

  • the invention relates to a high tension coupling having a fixed electrical contact in a closed chamber filled with a uid insulation, a movable piston carrying another electrical contact and arranged in said chamber to retain the fluid therein. Exteriorly of the chamber there is provided a reciprocable element which carries a still further electrical contact which upon movement thereof relative to the other contacts engages and moves the piston-carried contact whereupon all of the respective contacts are brought into engagement.
  • This invention relates to improvements in coupling means for high tension conductors and, more particularly, conductors of the type which are completely immersed in an insulation medium such as oil, non-conductive gas, cast resin, or the like, the insulant being contained in a grounded envelope.
  • the invention has among its objects to provide a coupling for high tension conductors of the type referred to by the use of which the above-mentioned diiculties can be easily avoided.
  • a coupling for high tension conductors which are immersed in an insulating medium -with the coupling including contact members that are adapted to be disengaged in a substantially permanently closed casing filled with an insulating medium, and from which no significant quantities of the insulating medium can escape and within which casing disengagement of the high tension conductors takes place before the conductor insulation is separated and a break in the air is formed and wherein the contacts are not re-engaged until the air break and the conductor insulation have lirst been closed.
  • the described sequence of operations may be automatically performed when the coupling members are pushed together or pulled apart.
  • the conductor insulant may be a solid, a liquid, or a gas, and it is unimportant whether the insulant is in any one of these mediums provided the insulant in the casing wherein the engagement and disengagement takes place is filled with aucid medium. Of utmost importance is the fact that the engaging and disengaging operation is effected between solid walls so that no insulation medium can escape.
  • the construction taught herein can be made so that the casing, together with the auxiliary spacer gap, form one movable wall which is provided with diametrically disposed contact pieces adapted to be interconnected on the inside of the casing as well as the outside thereof, through the medium of another contact member interposed between the first contact piece positioned in the casing and a secondary movable contact, the elements being so arranged that when coupling is to be achieved, the insulant which is displaced from within on the casing is forced into an accumulator that is positioned over a perforation in an aperture in the casing, and subsequently returned to the casing upon Withdrawal or disconnection of the last named contact.
  • the accumulator can be constructed in the form of a cylinder provided with a reciprocable piston, as shown, or a bellows or invertible sleeve.
  • an improved high tension coupling means in which at least one electrical contact is positioned in a closed insulation-lilled chamber with access to the chamber being gained by a means positioned exteriorly thereof which Supports another electrical contact means.
  • Another object of the invention is to provide an improved valve and operating means therefor which permits the making and breaking of the electrical contacts without loss of the insulation medium.
  • a further object of the invention is to include as a part of the closed chamber or casing an improved accumulator or storage chamber for the displaced insulant.
  • Another object of the invention is to provide intermediately disposed electrical contact means movably mounted in the insulant-filled chamber.
  • a still further object of the invention is to provide a linkage means which, upon actuation by the second electrical contact means, oscillates the valving means into an inoperative position, thereby permitting coupling of the contacts.
  • Yet another object of the invention is to provide a slidable orifice valve in one wall of the insulant chamber, the orifice valve being capable of lateral movement to longitudinally align the cooperating electrical contacts when they are moved relatively toward each other.
  • FIG. 1 is a cross-sectional elevational view of one embodiment of a coupling illustrating the contacts in disengaged position
  • FIG. 2 is a cross-sectional elevational view of the coupling of this embodiment of the invention shown in fully engaged circuit-making relation;
  • FIG. 3 is a cross-sectional elevational view of another expansible container.
  • a first electrical conductor 10 is connected to a bus-bar system (not shown).
  • This conductor 10 is embedded in a cast resin envelope 11 that is telescoped by a metal sheath 12 and projects downwardly therefrom into the casing 13 which is filled with oil, or an insulating gas, such as sulfahexafluoride.
  • a contact 14 Positioned at the free end of the first electrical conductor 10i, which projects from the cast resin envelope, is a contact 14 which is shown in elevation.
  • One portion of the wall of the casing 13 is apertured as at 15, iianged as shown and adapted to receive a cylinder 16 which contains a piston 17 preloaded by a spring 18.
  • the casing 13 is provided with an annular inturned flange portion 20t which is adapted to be received on an outwardly projecting annular ledge portion 21 which is integrated into a grounding tubular means 22 within which is positioned a generally tubular hollow cast resin body 23.
  • the hollow cast resin body 23 is provided with a central aperture extending therethrough and adapted at its upper portion to telescope a metallic cylinder member 24 which is provided at its lowermost extremity with an inturned annular shelf portion 25 which is adapted to receive a piston member or other valving means 26 which is adapted to movably support an electrical contact member 27.
  • the upper extremity of the contact member 27 is provided with a plurality of contact fingers 28 which are adapted to be received within complemental contact means provided within the element 14.
  • contact member 29 Beneath the piston 26 and arranged to be movably supported thereby is another contact member 29 which is also shown in elevation, this contact member being open to the atmosphere.
  • Contact member 29 is provided in its lower surface with a series of electrical contacts (not shown) within which the plurality of contact lingers 30, supported on the carrier 31, are adapted to project the last named carrier being positioned on the extremity of a conductor 32 carried by a piece of mobile equipment.
  • the carrier 32 which extends through a cast resin member 33 the intermediate portion of its longitudinal extremity being provided with a metallic sleeve 34, has together therewith been moved into a fully engaged contacting position.
  • the sleeve 34 is provided with an annular outturned perforated flange 35 to which is secured an inverted substantially frusto-conical cup-shaped plastic mem-ber 36, the lower inturned annular perforated flange portion of which is suitably secured to the perforated flange 35.
  • the interior diverging wall of the cast resin body 23 is substantially truste-conical and complementally formed to the perimeter of the frustoconical plastic sleeve 36.
  • the interior of the plastic sleeve 36 can be pressurized by the introduction thereinto of a gas through the coincident apertured flanges, as described, thereby moving the plastic sleeve 36 into firm engagement with the internal frusto-conical face of the cast resin body 23 and aligning all of the series of contact elements into fully engaged position, as shown.
  • the elements 38 and 39 are the only portions represented of a piece of mobile equipment which may be, for example, a truck for a retractable power circuit breaker, these parts being mounted thereon.
  • a piece of mobile equipment which may be, for example, a truck for a retractable power circuit breaker, these parts being mounted thereon.
  • FIG. 3 there is shown another type of expansible storage container, indicated as 40, into which any incompressible medium, such as oil, can be transmitted upon upward movement of piston 26.
  • any incompressible medium such as oil
  • a high tension coupling means comprising, a rst closed chamber filled with a uid insulation, movable piston means in said chamberV to retain the Huid in said first chamber during circuit-making and circuit-breaking operations, said piston including first contact means, a second electrical contact element in said closed chamber in substantial alignment with said contact means on said piston means, reciprocable means positioned exteriorly of said chamber supporting a third electrical contact means which, upon movement thereof relative to said first contact, engages and moves the piston means carrying said lirst contact means, whereby engagement of the respective contacts is initiated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Circuit Breakers (AREA)
  • Housings And Mounting Of Transformers (AREA)
US683424A 1964-05-27 1967-10-16 Movable piston means for retaining fluid in electrical coupling device Expired - Lifetime US3461257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC0032984 1964-05-27

Publications (1)

Publication Number Publication Date
US3461257A true US3461257A (en) 1969-08-12

Family

ID=7020594

Family Applications (1)

Application Number Title Priority Date Filing Date
US683424A Expired - Lifetime US3461257A (en) 1964-05-27 1967-10-16 Movable piston means for retaining fluid in electrical coupling device

Country Status (9)

Country Link
US (1) US3461257A (xx)
AT (2) AT278135B (xx)
BE (1) BE662610A (xx)
CH (1) CH442474A (xx)
DE (1) DE1465371B2 (xx)
FR (1) FR1429973A (xx)
GB (3) GB1112414A (xx)
NL (1) NL6504521A (xx)
SE (1) SE307613B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004201A1 (en) * 1983-04-11 1984-10-25 Raychem Corp Load break switch
CN111769398A (zh) * 2019-03-27 2020-10-13 核工业理化工程研究院 穿真空式高压快插装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2129885B1 (xx) * 1971-03-18 1974-02-15 Alsthom Cgee
IT8420810V0 (it) * 1984-02-10 1984-02-10 Sace Spa Sistema di contatti d'arco per interruttori elettrici, particolarmente a fluido d'estinzione dell'arco.
JPS63136482A (ja) * 1986-11-27 1988-06-08 動力炉・核燃料開発事業団 液体中接続方法及び接続装置
DE9109811U1 (de) * 1991-08-05 1991-10-02 Siemens AG, 8000 München Trennschalter
JP3487104B2 (ja) * 1996-12-16 2004-01-13 住友電装株式会社 ブレーカ装置
DE102007046406A1 (de) * 2007-09-24 2008-11-06 Siemens Ag Verbindungsverfahren für Kapselungsgehäuse und Anordnung mit mehreren Kapselungsgehäusen
KR101771465B1 (ko) * 2011-07-25 2017-09-06 엘에스산전 주식회사 가스절연 개폐장치
CN113363108A (zh) * 2021-06-02 2021-09-07 安徽华希电力科技有限公司 一种密封性好的一二次融合成套柱上断路器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1706140A (en) * 1927-08-08 1929-03-19 Gen Electric Switch for potheads
US1945916A (en) * 1929-09-23 1934-02-06 Rump Sigurd Switch with contacts surrounded by a medium under pressure
DE607795C (de) * 1927-12-31 1935-01-08 Sigwart Ruppel Dipl Ing Schaltkapsel
US2224611A (en) * 1940-06-08 1940-12-10 Gen Electric Electric circuit interrupter
US2389346A (en) * 1942-08-08 1945-11-20 Westinghouse Electric Corp Circuit interrupter
US2396871A (en) * 1942-10-15 1946-03-19 Bbc Brown Boveri & Cie High voltage cable connection
US2757261A (en) * 1951-07-19 1956-07-31 Westinghouse Electric Corp Circuit interrupters
US3002073A (en) * 1958-04-16 1961-09-26 Gen Electric Electric circuit interruption device and method
US3250869A (en) * 1962-04-05 1966-05-10 Rt & E Corp Inspection device for fluid filled electrical apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1706140A (en) * 1927-08-08 1929-03-19 Gen Electric Switch for potheads
DE607795C (de) * 1927-12-31 1935-01-08 Sigwart Ruppel Dipl Ing Schaltkapsel
US1945916A (en) * 1929-09-23 1934-02-06 Rump Sigurd Switch with contacts surrounded by a medium under pressure
US2224611A (en) * 1940-06-08 1940-12-10 Gen Electric Electric circuit interrupter
US2389346A (en) * 1942-08-08 1945-11-20 Westinghouse Electric Corp Circuit interrupter
US2396871A (en) * 1942-10-15 1946-03-19 Bbc Brown Boveri & Cie High voltage cable connection
US2757261A (en) * 1951-07-19 1956-07-31 Westinghouse Electric Corp Circuit interrupters
US3002073A (en) * 1958-04-16 1961-09-26 Gen Electric Electric circuit interruption device and method
US3250869A (en) * 1962-04-05 1966-05-10 Rt & E Corp Inspection device for fluid filled electrical apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004201A1 (en) * 1983-04-11 1984-10-25 Raychem Corp Load break switch
GB2147458A (en) * 1983-04-11 1985-05-09 Raychem Corp Load break switch
CN111769398A (zh) * 2019-03-27 2020-10-13 核工业理化工程研究院 穿真空式高压快插装置

Also Published As

Publication number Publication date
DE1465371B2 (de) 1970-09-17
GB1112415A (en) 1968-05-08
NL6504521A (xx) 1965-11-29
DE1465371A1 (de) 1969-01-16
GB1112414A (en) 1968-05-08
AT278135B (de) 1970-01-26
BE662610A (xx) 1965-08-17
SE307613B (xx) 1969-01-13
AT269251B (de) 1969-03-10
GB1112416A (en) 1968-05-08
FR1429973A (fr) 1966-02-25
CH442474A (de) 1967-08-31

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